Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2022-25-2-13-17
A. D. Bazanova, K. A. Laiko, Y. O. Filimonova
The article proposes to consider the radial structure of the placement of radiating elements in the nodes of a flat equidistant antenna array. The known variants of rectangular and hexagonal structures of elements placement in flat antenna arrays are considered. The main calculated ratios of parameters for the radial structure of the pitch are given as well as the linear distances between the emitters in various orthogonal directions, along the radial and angular components. For the proposed structure, using a specific example of an antenna array consisting of nine circles, with a total number of 180 emitters and a uniform amplitude distribution, the radiation patterns in three-dimensional space are calculated, that are represented on the drawing plane by various sections along the angular coordinate φ with a step of 150. The proposed radial structure, unlike the known ones, ensures the identity of the DN with minimal discrepancies from each other in different planes φ at the level of -35 dB.
{"title":"Structure of a flat equidistant antenna array with a radial grid","authors":"A. D. Bazanova, K. A. Laiko, Y. O. Filimonova","doi":"10.21293/1818-0442-2022-25-2-13-17","DOIUrl":"https://doi.org/10.21293/1818-0442-2022-25-2-13-17","url":null,"abstract":"The article proposes to consider the radial structure of the placement of radiating elements in the nodes of a flat equidistant antenna array. The known variants of rectangular and hexagonal structures of elements placement in flat antenna arrays are considered. The main calculated ratios of parameters for the radial structure of the pitch are given as well as the linear distances between the emitters in various orthogonal directions, along the radial and angular components. For the proposed structure, using a specific example of an antenna array consisting of nine circles, with a total number of 180 emitters and a uniform amplitude distribution, the radiation patterns in three-dimensional space are calculated, that are represented on the drawing plane by various sections along the angular coordinate φ with a step of 150. The proposed radial structure, unlike the known ones, ensures the identity of the DN with minimal discrepancies from each other in different planes φ at the level of -35 dB.","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124018663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2022-25-4-125-133
A. I. Andriyanov, Maksim V. Baranchikov
A control system for nonlinear dynamic processes of threephase regenerative converters is considered. The system is built on the basis of the target-oriented control and allows to provide the desired dynamic mode without additional parametric synthesis. It eliminates the contradiction between the requirements for the switching frequency or the parameters of the transient process in the system and the requirements for the desired dynamic mode when the system parameters change over a wide range. A control system for nonlinear dynamic processes based on the method of directing to the purpose is proposed, that allows solving the specified problem. When implementing the system under consideration, it is assumed to evaluate the coordinates of fixed points of the desired mode based on measurements on a real control object with subsequent digital processing of the received signals in order to isolate the main harmonics. The simulation of the considered system and the efficiency of the proposed control system for nonlinear dynamic processes are performed. The proposed approach can be applied in other power conversion systems with low- frequency periodic impacts in conditions of lowfrequency distortion of the shape of currents or voltage as a result of bifurcations.
{"title":"Control of nonlinear dynamic processes of three-phase regenerative converters with space-vector modulation","authors":"A. I. Andriyanov, Maksim V. Baranchikov","doi":"10.21293/1818-0442-2022-25-4-125-133","DOIUrl":"https://doi.org/10.21293/1818-0442-2022-25-4-125-133","url":null,"abstract":"A control system for nonlinear dynamic processes of threephase regenerative converters is considered. The system is built on the basis of the target-oriented control and allows to provide the desired dynamic mode without additional parametric synthesis. It eliminates the contradiction between the requirements for the switching frequency or the parameters of the transient process in the system and the requirements for the desired dynamic mode when the system parameters change over a wide range. A control system for nonlinear dynamic processes based on the method of directing to the purpose is proposed, that allows solving the specified problem. When implementing the system under consideration, it is assumed to evaluate the coordinates of fixed points of the desired mode based on measurements on a real control object with subsequent digital processing of the received signals in order to isolate the main harmonics. The simulation of the considered system and the efficiency of the proposed control system for nonlinear dynamic processes are performed. The proposed approach can be applied in other power conversion systems with low- frequency periodic impacts in conditions of lowfrequency distortion of the shape of currents or voltage as a result of bifurcations.","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128702521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2022-25-4-19-27
A. Loschilov, T. T. Trinh, N. Malyutin, G. Malyutin
A computational and experimental method for measuring the frequency dependence of the phase velocities of in-phase and antiphase waves in coupled strip transmission lines is described. The method is based on the experimental determination of the resonant frequencies of a section in which the first strip is current-carrying, is switched on between the input and output, and the second strip connected to the current-carrying strip is under a floating potential. With non-homogeneous dielectric filling, periodically repeated resonances are observed in the section. In parallel with experimental measurements, the frequency characteristics are calculated according to approximately defined primary parameters. At each of the resonant frequencies, the value of the calculated resonant frequency is reduced to the value of an experimentally determined frequency by varying the primary parameters. Then, according to the found primary parameters, the frequency dependences of the phase velocities of in-phase and in-phase waves in a complex form are determined. The method has been successfully applied to connected strip lines in the frequency range up to 8 GHz
{"title":"Computational and experimental method for measuring the frequency dependence of phase velocities of in-phase and antiphase waves in coupled lines with unbalanced electromagnetic coupling","authors":"A. Loschilov, T. T. Trinh, N. Malyutin, G. Malyutin","doi":"10.21293/1818-0442-2022-25-4-19-27","DOIUrl":"https://doi.org/10.21293/1818-0442-2022-25-4-19-27","url":null,"abstract":"A computational and experimental method for measuring the frequency dependence of the phase velocities of in-phase and antiphase waves in coupled strip transmission lines is described. The method is based on the experimental determination of the resonant frequencies of a section in which the first strip is current-carrying, is switched on between the input and output, and the second strip connected to the current-carrying strip is under a floating potential. With non-homogeneous dielectric filling, periodically repeated resonances are observed in the section. In parallel with experimental measurements, the frequency characteristics are calculated according to approximately defined primary parameters. At each of the resonant frequencies, the value of the calculated resonant frequency is reduced to the value of an experimentally determined frequency by varying the primary parameters. Then, according to the found primary parameters, the frequency dependences of the phase velocities of in-phase and in-phase waves in a complex form are determined. The method has been successfully applied to connected strip lines in the frequency range up to 8 GHz","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129598420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2019-22-2-114-118
N. N. Nesmelova, Radioeleсtronics
{"title":"Prognostic model of human adaptation to the information load","authors":"N. N. Nesmelova, Radioeleсtronics","doi":"10.21293/1818-0442-2019-22-2-114-118","DOIUrl":"https://doi.org/10.21293/1818-0442-2019-22-2-114-118","url":null,"abstract":"","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128195814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2021-24-3-7-11
G. G. Porubov, Denisov V. P.
The algorithm of estimating the bearing according to a set of differences of the signal phases measured between the elements of the aerial system is suggested. It is not necessary to know the distribution of the probabilities of the phase errors. The peculiarity of the algorithm is that there is no process of eliminating the ambiguity of the phase measurements and of restoring the total phase differences as a separate operation.
{"title":"Non-parametric algorithm of processing the signals in the phase direction finders with the linear aerial array","authors":"G. G. Porubov, Denisov V. P.","doi":"10.21293/1818-0442-2021-24-3-7-11","DOIUrl":"https://doi.org/10.21293/1818-0442-2021-24-3-7-11","url":null,"abstract":"The algorithm of estimating the bearing according to a set of differences of the signal phases measured between the elements of the aerial system is suggested. It is not necessary to know the distribution of the probabilities of the phase errors. The peculiarity of the algorithm is that there is no process of eliminating the ambiguity of the phase measurements and of restoring the total phase differences as a separate operation.","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127146607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2022-25-3-45-51
D. Novokhrestova, E. Kostyuchenko, I. Hodashinsky
The paper proposes a method to solve the task of automated quantitative assessment of the syllable pronunciation. This quantitative assessment is used to evaluate the speech quality during speech rehabilitation. An algorithm for quantifying the similarity of two audio signals of different lengths is presented. The algorithm uses a hybrid match measure. The hybrid measure is based on calculation of three metrics (DTWdistance, correlation coefficient and Minkowski metric) and using a fuzzy classifier as a mechanism for combining the calculated values. The average number of coincidences of estimates by the proposed algorithm and estimates by the previously applied method is 83%. A method for quantifying the similarity of speech signals using several reference signals is proposed. The method allows to consider the variability of speech and the individual characteristics of the phoneme’s pronunciation. This is achieved by using records of the patient's preoperative speech as reference signals.
{"title":"Algorithm and method for quantitative assessment of the speech signals similarity","authors":"D. Novokhrestova, E. Kostyuchenko, I. Hodashinsky","doi":"10.21293/1818-0442-2022-25-3-45-51","DOIUrl":"https://doi.org/10.21293/1818-0442-2022-25-3-45-51","url":null,"abstract":"The paper proposes a method to solve the task of automated quantitative assessment of the syllable pronunciation. This quantitative assessment is used to evaluate the speech quality during speech rehabilitation. An algorithm for quantifying the similarity of two audio signals of different lengths is presented. The algorithm uses a hybrid match measure. The hybrid measure is based on calculation of three metrics (DTWdistance, correlation coefficient and Minkowski metric) and using a fuzzy classifier as a mechanism for combining the calculated values. The average number of coincidences of estimates by the proposed algorithm and estimates by the previously applied method is 83%. A method for quantifying the similarity of speech signals using several reference signals is proposed. The method allows to consider the variability of speech and the individual characteristics of the phoneme’s pronunciation. This is achieved by using records of the patient's preoperative speech as reference signals.","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114284758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2022-25-4-80-87
A. Konev
The threats that allow access to data stored and processed on a secure microcontroller in order to compromise the end device are considered and divided into categories. The categories include threats that target the proper information processed on the microcontroller and threats that target the microcontroller itself and its components directly. The resulting threat model allows formalizing the construction of a list of threats for further formation of security requirements for the microcontroller during its development, and criteria for assessing its security at the testing stage.
{"title":"Security threat model for protected microcontroller and the information it processes","authors":"A. Konev","doi":"10.21293/1818-0442-2022-25-4-80-87","DOIUrl":"https://doi.org/10.21293/1818-0442-2022-25-4-80-87","url":null,"abstract":"The threats that allow access to data stored and processed on a secure microcontroller in order to compromise the end device are considered and divided into categories. The categories include threats that target the proper information processed on the microcontroller and threats that target the microcontroller itself and its components directly. The resulting threat model allows formalizing the construction of a list of threats for further formation of security requirements for the microcontroller during its development, and criteria for assessing its security at the testing stage.","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"15 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121466548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2019-22-1-45-49
D. R. Grigoryan, N. V. Nghi.
{"title":"Influence of inertia group of the S-box on the differential characteristic of the box cipher","authors":"D. R. Grigoryan, N. V. Nghi.","doi":"10.21293/1818-0442-2019-22-1-45-49","DOIUrl":"https://doi.org/10.21293/1818-0442-2019-22-1-45-49","url":null,"abstract":"","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122575884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2021-24-3-33-37
Y. Kryukov, D. Pokamestov, E. V. Rogozhnikov, S. Novichkov, D. Lakontsev
The mass machine-to-machine communication (mMTC) scenario is one of the key ones in 5G cellular communication system. Tens of thousands of devices can operate simultaneously in one mMTC cell, sending data asynchronously to the data collection point. This is the reason for the occurrence of unavoidable collisions of preamble in the random access procedure. Mathematical models of traffic generation from a large number of devices within a cell are used to reliably estimate the probability of collisions. Most existing models are based on the approach of generating aggregated traffic from all devices and do not allow taking into account the current state of each individual device, which reduces the reliability of model studies. To solve this problem, we propose a mathematical model for generating traffic (preambles) in a random access channel, taking into account the transition state matrix of a discrete Markov chain. This approach allows to describe more reliably the synchronous and asynchronous transmission of preambles within a cell. The developed model is designed to estimate the collision probability of the random access procedure in the mMTC scenario, taking into account the synchronous and asynchronous transmission of preambles.
{"title":"Math model for estimating the probability of preambles collisions within random access in the mMTC scenario","authors":"Y. Kryukov, D. Pokamestov, E. V. Rogozhnikov, S. Novichkov, D. Lakontsev","doi":"10.21293/1818-0442-2021-24-3-33-37","DOIUrl":"https://doi.org/10.21293/1818-0442-2021-24-3-33-37","url":null,"abstract":"The mass machine-to-machine communication (mMTC) scenario is one of the key ones in 5G cellular communication system. Tens of thousands of devices can operate simultaneously in one mMTC cell, sending data asynchronously to the data collection point. This is the reason for the occurrence of unavoidable collisions of preamble in the random access procedure. Mathematical models of traffic generation from a large number of devices within a cell are used to reliably estimate the probability of collisions. Most existing models are based on the approach of generating aggregated traffic from all devices and do not allow taking into account the current state of each individual device, which reduces the reliability of model studies. To solve this problem, we propose a mathematical model for generating traffic (preambles) in a random access channel, taking into account the transition state matrix of a discrete Markov chain. This approach allows to describe more reliably the synchronous and asynchronous transmission of preambles within a cell. The developed model is designed to estimate the collision probability of the random access procedure in the mMTC scenario, taking into account the synchronous and asynchronous transmission of preambles.","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"42 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123511096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21293/1818-0442-2021-24-1-91-96
V. Krysanov, V. Burkovskii, I. A. Khaychenko
The article considers topical issues in development of energysaving technologies to optimize the control of distribution networks according to the criterion of minimum power losses. The technology consists in introducing new hardware to control the modes based on static devices. Based on the analysis of the existing hardware created to control the modes of distributio networks, the developed circuitry solutions of the power part and the control system of the multifunctional thyristor voltage transformer and hybrid thyristor capacitor are proposed. Their main technical characteristics and ways to reduce voltage asymmetry, limiting short circuit currents and regulating reactive power are det ermined. The use of software and hardware solutions was recommended for a wide range of energy conservation tasks, both in the electric power sector and at the level of industrial facilities
{"title":"Hardware solutions for energy-efficient control technologies of distribution network objects based on power semiconductor devices","authors":"V. Krysanov, V. Burkovskii, I. A. Khaychenko","doi":"10.21293/1818-0442-2021-24-1-91-96","DOIUrl":"https://doi.org/10.21293/1818-0442-2021-24-1-91-96","url":null,"abstract":"The article considers topical issues in development of energysaving technologies to optimize the control of distribution networks according to the criterion of minimum power losses. The technology consists in introducing new hardware to control the modes based on static devices. Based on the analysis of the existing hardware created to control the modes of distributio networks, the developed circuitry solutions of the power part and the control system of the multifunctional thyristor voltage transformer and hybrid thyristor capacitor are proposed. Their main technical characteristics and ways to reduce voltage asymmetry, limiting short circuit currents and regulating reactive power are det ermined. The use of software and hardware solutions was recommended for a wide range of energy conservation tasks, both in the electric power sector and at the level of industrial facilities","PeriodicalId":273068,"journal":{"name":"Proceedings of Tomsk State University of Control Systems and Radioelectronics","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123610555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：